I read a great book by John Robison, who has Asperger's and wrote "Look Me In The Eye" about growing up and not knowing he had it. Anyway, I remember a part in the book where he described getting VERY frustrated with other children who didn't play with toys EXACTLY the way he felt they should be played with. As a result, he had few friends.
If you haven't read this book, you should. It's illuminating to get an insider's perspective of what's going on in the kids' heads at this age and why they do what they do (at least, in John Robison's case).
Otherwise, yeah, it's typical big sibling stuff. Maybe a little more exaggerated than you'd get with NT kids, but typical nonetheless.